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- 4...Bb7 5.Bd3 c5, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E14a - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 - Queen's Indian Defense: Spassky System, E14w - 6.O-O Be7 7.b3 O-O 8.Bb2 cxd4 9.exd4 d5, SÉRIE E
Malta ol (Men) 1980 – Round 1 – Portisch, Lajos – 1-0 – Helmers, Knut Joran – G7

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- E60-E99 1. d4 Nf6 2. c4 g6 King's Indian defence, E69a - 1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nbd7 7. Nc3 e5 8. e4 c6 9. h3 - King's Indian Defense: Fianchetto Variation, Classical Main Line, SÉRIE E
Malta ol (Men) 1980 – Round 1 – Portisch, Lajos – 1-0 – Westerinen, Heikki M.J. – G10

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- A10-A39 English Opening, A25 - 1. c4 e5 2. Nc3 Nc6 - English Opening: King's English Variation, Reversed Closed Sicilian, A25 - 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4.... - English Opening, A25 - Closed, Hort, 7.d3, SÉRIE A
Malta ol (Men) 1980 – Round 1 – Portisch, Lajos – 1/2-1/2 – Ljubojevic, Ljubomir – G3

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- 6...e5 7.Nb3 Be7, B20 - B99 - 1. e4 c5 - Sicilian Defense, B90-B99 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 Sicilian, Najdorf, B92a - 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 - Sicilian Defense: Najdorf Variation, Opocensky Variation, B92j - 8...O-O - 6.Be2 e5 7.Nb3 Be7 8.O-O O-O, SÉRIE B 1.e4 2....
Malta ol (Men) 1980 – Round 1 – Pritchett, Craig W – 0-1 – Portisch, Lajos – G16

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- B20 - B99 - 1. e4 c5 - Sicilian Defense, B80-B85 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e6 Sicilian, Scheveningen variation, B85 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nc3 Qc7 6. Be2 a6 7. O-O Nf6 8. Be3 Be7 9. f4 d6 10. Qe1 O-O - Sicilian Defense: Scheveningen Variation, Classical Main Line, B85 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, SÉRIE B 1.e4 2....
Malta ol (Men) 1980 – Round 1 – Rantanen, Yrjo A. – 1/2-1/2 – Ribli, Zoltan – G15

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- 5.c4 Nf6, B20 - B99 - 1. e4 c5 - Sicilian Defense, B40 - B49 1. e4 c5 2. Nf3 e6 Sicilian defence, B41 - 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4.... - Sicilian Defense, B41a - Kan (Paulsen), B41j - Kan, 5.c4 Nf6 6.Nc3 d6, SÉRIE B 1.e4 2....
Malta ol (Men) 1980 – Round 1 – Ribli, Zoltan – 1-0 – Karlsson, Lars 1937 – G29

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- 4.Nc3 Bb7, E12-E19 1. d4 Nf6 2. c4 e6 3. Nf3 b6 Queen's Indian defence, E13 - 1. d4 Nf6 2. c4 e6 3. Nf3 b6 4.... - Queen's Indian Defense, E13q - 5.Bg5 h6 6.Bh4 Bb4 7.e3 g5 8.Bg3 Ne4 9.Qc2 Bxc3+ 10.bxc3 d6 11.Bd3 f5, SÉRIE E
Malta ol (Men) 1980 – Round 1 – Ribli, Zoltan – 1-0 – Seirawan, Yasser – G6

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- 5.e3 a6, D40-D42 – 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 – Queen’s Gambit Declined: Semi-Tarrasch Defense, D40a - 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 - Queen's Gambit Declined: Semi-Tarrasch Defense, D40e - 6.cxd5 exd5, SÉRIE D
Malta ol (Men) 1980 – Round 1 – Ribli, Zoltan – 1/2-1/2 – Suba, Mihai – G27

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